S
M
T
W
T
F
S
26
59°
42°
27
65°
40°
28
69°
53°
29
55°
44°
30
56°
42°
1
49°
37°
2
48°
36°
3
64°
34°
4
75°
48°
5
64°
47°
6
55°
46°
7
58°
42°
8
63°
40°
9
70°
48°
10
63°
40°
11
57°
37°
12
61°
33°
13
60°
45°
14
65°
42°
15
69°
38°
16
79°
54°
17
85°
59°
18
86°
67°
19
86°
52°
20
63°
39°
21
60°
47°
22
60°
53°
23
68°
57°
24
71°
57°
25
72°
56°
26
77°
58°
27
76°
56°
28
72°
56°
29
73°
55°
30
77°
56°
31
78°
65°
1
73°
59°
2
76°
59°
3
73°
58°
4
69°
58°
5
70°
57°
6
73°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Harrow
Harrow's May 2026 forecast shows daily high temperatures ranging from 60° to 86°, with overnight lows between 39° and 67°. The average high for May is 73° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Harrow. See also: June | July | August.
